Latest Cisco IOS release with Version 5 flow export?

Okay the cisco people haven't answered this in three days. *sigh* Does anyone know what the latest version of Enterprise IOS to support exporting Version 5 flow export data? i.e. the `ip flow-export version` command The one I am running is 11.1(18)CA and there is a bug in it which I need to upgrade out of. The 11.3 code they want us to go to only exports version 1 code. (or they've moved the command somewhere else) If you private email the answer to me I will summarize to the list.